918
FNCA52 TJSJ 050827
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
427 AM AST THU FEB 5 2026
DISCUSSION
A HIGH PRESSURE SYSTEM OVER THE CENTRAL NORTH ATLANTIC WILL
PROMOTE SOUTHEASTERLY WINDS AT AROUND 10 MPH TODAY, GRADUALLY
VEERING MORE FROM THE SOUTH BY FRIDAY. KBDI INDEX IN GUANICA
REDUCED TO 478 WITH RECENT RAINFALL ACTIVITY, WHILE CABO ROJO
REMAINS ABOVE THE THRESHOLD, IN 630 AND CAMP SANTIAGO NEAR 554.
MINIMUM RELATIVE HUMIDITY VALUES ARE FORECAST TO REMAIN ABOVE
CRITICAL LEVELS REDUCING THE RISK OF FIRE SPREAD TODAY.
PRZ014-060830-
SOUTHEAST COASTAL PLAINS-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 50
TEMP (24H TREND) 84 (+2) 69 (-2) 86
RH % (24H TREND) 60 (-14) 94 (-2) 61
WIND 20FT/EARLY(MPH) SE 10 SE 8 S 10
WIND 20FT/LATE(MPH) SE 10 SE 8 S 10
MIXING HGT(FT-AGL/MSL)3960 4510
TRANSPORT WND (MPH) SE 9 SW 8
VENT RATE (KT-FT) 31680 31570
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-060830-
SOUTHERN HILLS-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 50
TEMP (24H TREND) 81 (+4) 66 (-3) 82
RH % (24H TREND) 72 (-10) 98 (+1) 67
WIND 20FT/EARLY(MPH) SE 8 SE 8 S 9
WIND 20FT/LATE(MPH) SE 8 SE 8 S 9
MIXING HGT(FT-AGL/MSL)4280 5410
TRANSPORT WND (MPH) E 8 SW 9
VENT RATE (KT-FT) 29960 43280
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-060830-
NORTH COASTAL PLAINS-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER MCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 50
TEMP (24H TREND) 84 (+5) 67 (-3) 86
RH % (24H TREND) 69 (-16) 100 (0) 63
WIND 20FT/EARLY(MPH) E 10 SE 8 NW 13
WIND 20FT/LATE(MPH) E 10 SE 8 NW 13
MIXING HGT(FT-AGL/MSL)3440 4280
TRANSPORT WND (MPH) E 8 SW 8
VENT RATE (KT-FT) 24080 29960
DISPERSION 5 5
DSI 6 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-060830-
NORTHERN HILLS-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 20 50
TEMP (24H TREND) 83 (+6) 65 (-3) 84
RH % (24H TREND) 69 (-18) 99 (-1) 62
WIND 20FT/EARLY(MPH) SE 8 SE 6 W 12
WIND 20FT/LATE(MPH) SE 8 SE 6 W 12
MIXING HGT(FT-AGL/MSL)3980 5580
TRANSPORT WND (MPH) E 7 SW 9
VENT RATE (KT-FT) 23880 44640
DISPERSION 4 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-060830-
WEST COAST-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 40
TEMP (24H TREND) 85 (+3) 69 (-1) 86
RH % (24H TREND) 66 (-11) 97 (0) 63
WIND 20FT/EARLY(MPH) SE 11 SE 14 S 11
WIND 20FT/LATE(MPH) SE 11 SE 14 S 11
MIXING HGT(FT-AGL/MSL)4070 5170
TRANSPORT WND (MPH) SE 8 SW 10
VENT RATE (KT-FT) 28490 46530
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-060830-
EASTERN INTERIOR-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 20 40
TEMP (24H TREND) 82 (+5) 66 (-3) 84
RH % (24H TREND) 72 (-15) 99 (-1) 65
WIND 20FT/EARLY(MPH) SE 10 SE 9 SW 9
WIND 20FT/LATE(MPH) SE 10 SE 9 SW 9
MIXING HGT(FT-AGL/MSL)4000 5270
TRANSPORT WND (MPH) SE 7 SW 8
VENT RATE (KT-FT) 24000 36890
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-060830-
LUQUILLO MOUNTAIN RANGE-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 50
TEMP (24H TREND) 78 (+4) 65 (-3) 79
RH % (24H TREND) 78 (-10) 100 (0) 70
WIND 20FT/EARLY(MPH) SE 9 SE 8 S 6
WIND 20FT/LATE(MPH) SE 9 SE 8 S 6
MIXING HGT(FT-AGL/MSL)3280 3850
TRANSPORT WND (MPH) S 13 SW 9
VENT RATE (KT-FT) 36080 30800
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-060830-
CENTRAL MOUNTAIN RANGE-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 50
TEMP (24H TREND) 80 (+5) 64 (-3) 81
RH % (24H TREND) 69 (-14) 99 (0) 64
WIND 20FT/EARLY(MPH) SE 8 SE 10 S 11
WIND 20FT/LATE(MPH) SE 8 SE 10 S 11
MIXING HGT(FT-AGL/MSL)4470 6290
TRANSPORT WND (MPH) E 7 SW 9
VENT RATE (KT-FT) 26820 50320
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-060830-
CAYEY MOUNTAIN RANGE-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 50
TEMP (24H TREND) 77 (+3) 66 (-2) 80
RH % (24H TREND) 79 (-10) 99 (-1) 71
WIND 20FT/EARLY(MPH) SE 8 SE 6 S 8
WIND 20FT/LATE(MPH) SE 8 SE 6 S 8
MIXING HGT(FT-AGL/MSL)3850 4590
TRANSPORT WND (MPH) E 8 SW 9
VENT RATE (KT-FT) 26950 36720
DISPERSION 4 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-060830-
VIEQUES-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 30 30
TEMP (24H TREND) 84 (+1) 71 (-1) 85
RH % (24H TREND) 63 (-7) 95 (-1) 61
WIND 20FT/EARLY(MPH) SE 10 SE 11 S 10
WIND 20FT/LATE(MPH) SE 10 SE 11 S 10
MIXING HGT(FT-AGL/MSL)3080 3120
TRANSPORT WND (MPH) S 14 S 13
VENT RATE (KT-FT) 36960 34320
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-060830-
CULEBRA-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 30 40
TEMP (24H TREND) 84 (+1) 73 (-1) 86
RH % (24H TREND) 65 (-7) 94 (0) 61
WIND 20FT/EARLY(MPH) SE 11 SE 11 S 10
WIND 20FT/LATE(MPH) SE 11 SE 11 S 10
MIXING HGT(FT-AGL/MSL)3100 3100
TRANSPORT WND (MPH) SE 12 S 13
VENT RATE (KT-FT) 31000 34100
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-060830-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 10 0 40
TEMP (24H TREND) 86 (+2) 70 (-1) 87
RH % (24H TREND) 57 (-12) 90 (-3) 57
WIND 20FT/EARLY(MPH) SE 14 G18 SE 14 G19 S 10
WIND 20FT/LATE(MPH) SE 14 G18 SE 14 G19 S 10
MIXING HGT(FT-AGL/MSL)4200 5270
TRANSPORT WND (MPH) SE 12 SW 8
VENT RATE (KT-FT) 42000 36890
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-060830-
SAINT THOMAS AND SAINT JOHN-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40 60
TEMP (24H TREND) 84 (+2) 72 (-3) 85
RH % (24H TREND) 65 (-7) 95 (+1) 61
WIND 20FT/EARLY(MPH) SE 11 SE 10 S 10
WIND 20FT/LATE(MPH) SE 11 SE 10 S 10
MIXING HGT(FT-AGL/MSL)3310 3330
TRANSPORT WND (MPH) SE 12 S 13
VENT RATE (KT-FT) 33100 36630
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-060830-
ST CROIX-
427 AM AST THU FEB 5 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 20
TEMP (24H TREND) 85 (+2) 72 (-2) 86
RH % (24H TREND) 62 (-10) 95 (+2) 61
WIND 20FT/EARLY(MPH) SE 11 SE 9 S 9
WIND 20FT/LATE(MPH) SE 11 SE 9 S 9
MIXING HGT(FT-AGL/MSL)4360 4900
TRANSPORT WND (MPH) SE 14 S 12
VENT RATE (KT-FT) 52320 49000
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page